httplib2 report ServerNotFoundError when use a proxy

[nidbCN]

I found this issue when use tool add-apt-repository:

❯ sudo add-apt-repository ppa:ondrej/php -y
[sudo] password for nidb:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1363, in _conn_request
    conn.connect()
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1139, in connect
    address_info = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)
  File "/usr/lib/python3.10/socket.py", line 955, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/add-apt-repository", line 364, in <module>
    sys.exit(0 if addaptrepo.main() else 1)
  File "/usr/bin/add-apt-repository", line 347, in main
    shortcut = handler(source, **shortcut_params)
  File "/usr/lib/python3/dist-packages/softwareproperties/shortcuts.py", line 40, in shortcut_handler
    return handler(shortcut, **kwargs)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 82, in __init__
    if self.lpppa.publish_debug_symbols:
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 120, in lpppa
    self._lpppa = self.lpteam.getPPAByName(name=self.ppaname)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 107, in lpteam
    self._lpteam = self.lp.people(self.teamname)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 98, in lp
    self._lp = login_func("%s.%s" % (self.__module__, self.__class__.__name__),
  File "/usr/lib/python3/dist-packages/launchpadlib/launchpad.py", line 494, in login_anonymously
    return cls(
  File "/usr/lib/python3/dist-packages/launchpadlib/launchpad.py", line 230, in __init__
    super(Launchpad, self).__init__(
  File "/usr/lib/python3/dist-packages/lazr/restfulclient/resource.py", line 472, in __init__
    self._wadl = self._browser.get_wadl_application(self._root_uri)
  File "/usr/lib/python3/dist-packages/lazr/restfulclient/_browser.py", line 447, in get_wadl_application
    response, content = self._request(url, media_type=wadl_type)
  File "/usr/lib/python3/dist-packages/lazr/restfulclient/_browser.py", line 389, in _request
    response, content = self._request_and_retry(
  File "/usr/lib/python3/dist-packages/lazr/restfulclient/_browser.py", line 359, in _request_and_retry
    response, content = self._connection.request(
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1725, in request
    (response, content) = self._request(
  File "/usr/lib/python3/dist-packages/launchpadlib/launchpad.py", line 144, in _request
    response, content = super(LaunchpadOAuthAwareHttp, self)._request(
  File "/usr/lib/python3/dist-packages/lazr/restfulclient/_browser.py", line 184, in _request
    return super(RestfulHttp, self)._request(
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1441, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1370, in _conn_request
    raise ServerNotFoundError("Unable to find the server at %s" % conn.host)
httplib2.error.ServerNotFoundError: Unable to find the server at api.launchpad.net

I notice httplib2 say "Unable to find the server at api.launchpad.net" so I try nslookup and curl but they work fine.

Then I use python REPL and try request http://cn.bing.com use httplib2, and.... httplib2 say ServerNotFound

Python 3.10.6 (main, Nov 14 2022, 16:10:14) [GCC 11.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import httplib2
>>> h = httplib2.Http(".cache")
>>> (header, content) = h.request("http://cn.bing.com", "GET")
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1363, in _conn_request
    conn.connect()
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1024, in connect
    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
  File "/usr/lib/python3.10/socket.py", line 955, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1725, in request
    (response, content) = self._request(
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1441, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "/usr/lib/python3/dist-packages/httplib2/__init__.py", line 1370, in _conn_request
    raise ServerNotFoundError("Unable to find the server at %s" % conn.host)
httplib2.error.ServerNotFoundError: Unable to find the server at cn.bing.com
>>>

Then I disable my proxy by unset HTTP_PROXY and try again, and request has no error.

[Jorpy76]

HI ! I have the same problem ... `:=(

`calcurse-caldav --init=two-way
Connecting to https://apidata.googleusercontent.com...
Traceback (most recent call last):
File "/usr/lib/python3.10/site-packages/httplib2/init.py", line 1362, in _conn_request
conn.connect()
File "/usr/lib/python3.10/site-packages/httplib2/init.py", line 1138, in connect
address_info = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)
File "/usr/lib/python3.10/socket.py", line 955, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/sbin/calcurse-caldav", line 768, in
etagdict = get_etags(conn)
File "/sbin/calcurse-caldav", line 343, in get_etags
headers, body = remote_query(conn, "REPORT", absolute_uri, headers, body)
File "/sbin/calcurse-caldav", line 304, in remote_query
resp, body = conn.request(path, cmd, body=body, headers=headers)
File "/usr/lib/python3.10/site-packages/httplib2/init.py", line 1720, in request
(response, content) = self._request(
File "/usr/lib/python3.10/site-packages/httplib2/init.py", line 1440, in _request
(response, content) = self._conn_request(conn, request_uri, method, body, headers)
File "/usr/lib/python3.10/site-packages/httplib2/init.py", line 1369, in _conn_request
raise ServerNotFoundError("Unable to find the server at %s" % conn.host)
httplib2.error.ServerNotFoundError: Unable to find the server at https`